Abdel Tawab Mullah Huweish, No. 16 on the U.S. list of most wanted Iraqis, was director of the Military Industrialization Organization, which oversaw development of Iraq's most lethal weapons. His detention could add to investigators' knowledge of any programs aimed at producing chemical, biological or nuclear weapons.Huweish may also have family ties to Saddam - last year, there were reports that Huweish's then 27-year-old daughter, Wafa, had married the Iraqi leader, making Huweish Saddam's father-in-law.He rose to his high position in the Iraqi leadership around the same time.